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mpv/libmpdemux/network.c

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/*
* Network layer for MPlayer
* by Bertrand BAUDET <bertrand_baudet@yahoo.com>
* (C) 2001, MPlayer team.
*/
//#define DUMP2FILE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <ctype.h>
#include "config.h"
#include "stream.h"
#include "demuxer.h"
#include "network.h"
#include "http.h"
#include "url.h"
#include "asf.h"
static struct {
char *mime_type;
int demuxer_type;
} mime_type_table[] = {
// MP3 streaming, some MP3 streaming server answer with audio/mpeg
{ "audio/mpeg", DEMUXER_TYPE_MPEG_PS },
// MPEG streaming
{ "video/mpeg", DEMUXER_TYPE_MPEG_PS },
// AVI ??? => video/x-msvideo
{ "video/x-msvideo", DEMUXER_TYPE_AVI },
// MOV => video/quicktime
{ "video/quicktime", DEMUXER_TYPE_MOV },
// ASF
{ "audio/x-ms-wax", DEMUXER_TYPE_ASF },
{ "audio/x-ms-wma", DEMUXER_TYPE_ASF },
{ "video/x-ms-asf", DEMUXER_TYPE_ASF },
{ "video/x-ms-afs", DEMUXER_TYPE_ASF },
{ "video/x-ms-wvx", DEMUXER_TYPE_ASF },
{ "video/x-ms-wmv", DEMUXER_TYPE_ASF },
{ "video/x-ms-wma", DEMUXER_TYPE_ASF },
{ "text/plain", DEMUXER_TYPE_ASF }, // This is the mime type that a web server send when sending a raw asf without streaming encapsulation.
};
static struct {
char *extension;
int demuxer_type;
} extensions_table[] = {
{ "mpeg", DEMUXER_TYPE_MPEG_PS },
{ "mpg", DEMUXER_TYPE_MPEG_PS },
{ "mpe", DEMUXER_TYPE_MPEG_ES },
{ "avi", DEMUXER_TYPE_AVI },
{ "mov", DEMUXER_TYPE_MOV },
{ "qt", DEMUXER_TYPE_MOV },
{ "asx", DEMUXER_TYPE_ASF },
{ "asf", DEMUXER_TYPE_ASF },
{ "wmv", DEMUXER_TYPE_ASF },
{ "wma", DEMUXER_TYPE_ASF },
{ "viv", DEMUXER_TYPE_VIVO },
};
streaming_ctrl_t *
streaming_ctrl_new( ) {
streaming_ctrl_t *streaming_ctrl;
streaming_ctrl = (streaming_ctrl_t*)malloc(sizeof(streaming_ctrl_t));
if( streaming_ctrl==NULL ) {
printf("Failed to allocate memory\n");
return NULL;
}
memset( streaming_ctrl, 0, sizeof(streaming_ctrl_t) );
return streaming_ctrl;
}
void
streaming_ctrl_free( streaming_ctrl_t *streaming_ctrl ) {
if( streaming_ctrl==NULL ) return;
free( streaming_ctrl );
}
// Connect to a server using a TCP connection
int
connect2Server(char *host, int port) {
int socket_server_fd;
int err, err_len;
int ret;
fd_set set;
struct timeval tv;
struct sockaddr_in server_address;
printf("Connecting to server %s:%d ...\n", host, port );
socket_server_fd = socket(AF_INET, SOCK_STREAM, 0);
if( socket_server_fd==-1 ) {
perror("Failed to create socket");
return -1;
}
if( isalpha(host[0]) ) {
struct hostent *hp;
hp=(struct hostent*)gethostbyname( host );
if( hp==NULL ) {
printf("Counldn't resolve name: %s\n", host);
return -1;
}
memcpy( (void*)&server_address.sin_addr.s_addr, (void*)hp->h_addr, hp->h_length );
} else {
inet_pton(AF_INET, host, &server_address.sin_addr);
}
server_address.sin_family=AF_INET;
server_address.sin_port=htons(port);
// Turn the socket as non blocking so we can timeout on the connection
fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) | O_NONBLOCK );
if( connect( socket_server_fd, (struct sockaddr*)&server_address, sizeof(server_address) )==-1 ) {
if( errno!=EINPROGRESS ) {
perror("Failed to connect to server");
close(socket_server_fd);
return -1;
}
}
tv.tv_sec = 5; // 5 seconds timeout on connection
tv.tv_usec = 0;
FD_ZERO( &set );
FD_SET( socket_server_fd, &set );
// When the connection will be made, we will have a writable fd
ret = select(socket_server_fd+1, NULL, &set, NULL, &tv);
if( ret<=0 ) {
if( ret<0 ) perror("select failed");
else printf("Connection timeout\n");
return -1;
}
// Turn back the socket as blocking
fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) & ~O_NONBLOCK );
// Check if there were any error
err_len = sizeof(int);
ret = getsockopt(socket_server_fd,SOL_SOCKET,SO_ERROR,&err,&err_len);
if(ret < 0) {
printf("getsockopt failed : %s\n",strerror(errno));
return -1;
}
if(err > 0) {
printf("Connect error : %s\n",strerror(err));
return -1;
}
return socket_server_fd;
}
int
http_send_request( URL_t *url ) {
HTTP_header_t *http_hdr;
char str[80];
int fd;
http_hdr = http_new_header();
http_set_uri( http_hdr, url->file );
snprintf(str, 80, "Host: %s", url->hostname );
http_set_field( http_hdr, str);
http_set_field( http_hdr, "User-Agent: MPlayer");
http_set_field( http_hdr, "Connection: closed");
if( http_build_request( http_hdr )==NULL ) {
return -1;
}
if( url->port==0 ) url->port = 80;
fd = connect2Server( url->hostname, url->port );
if( fd<0 ) {
return -1;
}
write( fd, http_hdr->buffer, http_hdr->buffer_size );
http_free( http_hdr );
return fd;
}
HTTP_header_t *
http_read_response( int fd ) {
HTTP_header_t *http_hdr;
char response[BUFFER_SIZE];
int i;
http_hdr = http_new_header();
if( http_hdr==NULL ) {
return NULL;
}
do {
i = read( fd, response, BUFFER_SIZE );
if( i<0 ) {
printf("Read failed\n");
http_free( http_hdr );
return NULL;
}
if( i==0 ) {
printf("http_read_response read 0 -ie- EOF\n");
http_free( http_hdr );
return NULL;
}
http_response_append( http_hdr, response, i );
} while( !http_is_header_entire( http_hdr ) );
http_response_parse( http_hdr );
return http_hdr;
}
// By using the protocol, the extension of the file or the content-type
// we might be able to guess the streaming type.
int
autodetectProtocol(URL_t *url, int *fd_out) {
HTTP_header_t *http_hdr;
int fd=-1;
int i;
int redirect;
char *extension;
char *content_type;
char *next_url;
char response[1024];
do {
*fd_out=-1;
next_url = NULL;
extension = NULL;
content_type = NULL;
redirect = 0;
if( url==NULL ) return DEMUXER_TYPE_UNKNOWN;
// Get the extension of the file if present
if( url->file!=NULL ) {
for( i=strlen(url->file) ; i>0 ; i-- ) {
if( url->file[i]=='.' ) {
extension=(url->file)+i+1;
break;
}
}
}
extension=NULL;
if( extension!=NULL ) {
printf("Extension: %s\n", extension );
// Look for the extension in the extensions table
for( i=0 ; i<(sizeof(extensions_table)/sizeof(extensions_table[0])) ; i++ ) {
if( !strcasecmp(extension, extensions_table[i].extension) ) {
//if( url->port==0 ) url->port = 80;
return extensions_table[i].demuxer_type;
}
}
}
// Checking for RTSP
if( !strcasecmp(url->protocol, "rtsp") ) {
printf("RTSP protocol not yet implemented!\n");
return DEMUXER_TYPE_UNKNOWN;
}
// Checking for ASF
if( !strncasecmp(url->protocol, "mms", 3) ) {
//if( url->port==0 ) url->port = 80;
return DEMUXER_TYPE_ASF;
}
// HTTP based protocol
if( !strcasecmp(url->protocol, "http") ) {
if( url->port==0 ) url->port = 80;
fd = http_send_request( url );
if( fd<0 ) {
*fd_out=-1;
return DEMUXER_TYPE_UNKNOWN;
}
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) {
close( fd );
*fd_out=-1;
http_free( http_hdr );
return DEMUXER_TYPE_UNKNOWN;
}
*fd_out=fd;
http_debug_hdr( http_hdr );
// Check if the response is an ICY status_code reason_phrase
if( !strcasecmp(http_hdr->protocol, "ICY") ) {
// Ok, we have detected an mp3 streaming
http_free( http_hdr );
return DEMUXER_TYPE_MPEG_PS;
}
switch( http_hdr->status_code ) {
case 200: // OK
// Look if we can use the Content-Type
content_type = http_get_field( http_hdr, "Content-Type" );
if( content_type!=NULL ) {
printf("Content-Type: [%s]\n", content_type );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
// Check in the mime type table for a demuxer type
for( i=0 ; i<(sizeof(mime_type_table)/sizeof(mime_type_table[0])) ; i++ ) {
if( !strcasecmp( content_type, mime_type_table[i].mime_type ) ) {
http_free( http_hdr );
return mime_type_table[i].demuxer_type;
}
}
}
break;
// Redirect
case 301: // Permanently
case 302: // Temporarily
// TODO: RFC 2616, recommand to detect infinite redirection loops
next_url = http_get_field( http_hdr, "Location" );
if( next_url!=NULL ) {
close( fd );
url_free( url );
url = url_new( next_url );
redirect = 1;
}
break;
default:
printf("Server returned %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
close( fd );
*fd_out=-1;
http_free( http_hdr );
return DEMUXER_TYPE_UNKNOWN;
}
} else {
printf("Unknown protocol '%s'\n", url->protocol );
return DEMUXER_TYPE_UNKNOWN;
}
} while( redirect );
http_free( http_hdr );
return DEMUXER_TYPE_UNKNOWN;
}
int
streaming_bufferize( streaming_ctrl_t *streaming_ctrl, char *buffer, int size) {
printf("streaming_bufferize\n");
streaming_ctrl->buffer = (char*)malloc(size);
if( streaming_ctrl->buffer==NULL ) {
printf("Memory allocation failed\n");
return -1;
}
memcpy( streaming_ctrl->buffer, buffer, size );
streaming_ctrl->buffer_size = size;
}
int
nop_streaming_read( int fd, char *buffer, int size, streaming_ctrl_t *stream_ctrl ) {
int len=0;
//printf("nop_streaming_read\n");
if( stream_ctrl->buffer_size!=0 ) {
int buffer_len = stream_ctrl->buffer_size-stream_ctrl->buffer_pos;
printf("%d bytes in buffer\n", stream_ctrl->buffer_size);
len = (size<buffer_len)?size:buffer_len;
memcpy( buffer, (stream_ctrl->buffer)+(stream_ctrl->buffer_pos), len );
stream_ctrl->buffer_pos += len;
printf("buffer_pos = %d\n", stream_ctrl->buffer_pos );
if( stream_ctrl->buffer_pos>=stream_ctrl->buffer_size ) {
free( stream_ctrl->buffer );
stream_ctrl->buffer = NULL;
stream_ctrl->buffer_size = 0;
stream_ctrl->buffer_pos = 0;
printf("buffer cleaned\n");
}
printf("read %d bytes from buffer\n", len );
}
if( len<size ) {
int ret;
ret = read( fd, buffer+len, size-len );
if( ret<0 ) {
printf("nop_streaming_read error : %s\n",strerror(errno));
}
len += ret;
//printf("read %d bytes from network\n", len );
}
return len;
}
int
nop_streaming_seek( int fd, off_t pos, streaming_ctrl_t *stream_ctrl ) {
return -1;
}
int
nop_streaming_start( stream_t *stream ) {
HTTP_header_t *http_hdr;
int fd;
if( stream==NULL ) return -1;
fd = stream->fd;
if( fd<0 ) {
fd = http_send_request( stream->streaming_ctrl->url );
if( fd<0 ) return -1;
http_hdr = http_read_response( fd );
if( http_hdr==NULL ) return -1;
switch( http_hdr->status_code ) {
case 200: // OK
printf("Content-Type: [%s]\n", http_get_field(http_hdr, "Content-Type") );
printf("Content-Length: [%s]\n", http_get_field(http_hdr, "Content-Length") );
if( http_hdr->body_size>0 ) {
if( streaming_bufferize( stream->streaming_ctrl, http_hdr->body, http_hdr->body_size )<0 ) {
http_free( http_hdr );
return -1;
}
}
break;
default:
printf("Server return %d: %s\n", http_hdr->status_code, http_hdr->reason_phrase );
close( fd );
fd = -1;
}
stream->fd = fd;
}
http_free( http_hdr );
stream->streaming_ctrl->streaming_read = nop_streaming_read;
stream->streaming_ctrl->streaming_seek = nop_streaming_seek;
stream->streaming_ctrl->prebuffer_size = 180000;
// stream->streaming_ctrl->prebuffer_size = 0;
stream->streaming_ctrl->buffering = 1;
// stream->streaming_ctrl->buffering = 0;
stream->streaming_ctrl->status = streaming_playing_e;
return fd;
}
int
streaming_start(stream_t *stream, URL_t *url, int demuxer_type) {
int ret=-1;
if( stream==NULL ) return -1;
stream->streaming_ctrl = streaming_ctrl_new( );
if( stream->streaming_ctrl==NULL ) {
return -1;
}
stream->streaming_ctrl->url = url_copy(url);
// stream->streaming_ctrl->demuxer_type = demuxer_type;
stream->fd = -1;
switch( demuxer_type ) {
case DEMUXER_TYPE_ASF:
// Send the appropriate HTTP request
// Need to filter the network stream.
// ASF raw stream is encapsulated.
ret = asf_streaming_start( stream );
break;
case DEMUXER_TYPE_AVI:
case DEMUXER_TYPE_MOV:
case DEMUXER_TYPE_MPEG_ES:
case DEMUXER_TYPE_MPEG_PS:
// Generic start, doesn't need to filter
// the network stream, it's a raw stream
ret = nop_streaming_start( stream );
break;
case DEMUXER_TYPE_UNKNOWN:
default:
printf("Unable to detect the streaming type\n");
ret = -1;
}
if( ret<0 ) {
free( stream->streaming_ctrl );
} else {
// bufferize( stream );
}
return ret;
}
int
streaming_stop( stream_t *stream ) {
stream->streaming_ctrl->status = streaming_stopped_e;
return 0;
}
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